Improvement in vulcanizing apparatus



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J'. D. HEIGES.`

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J. D. HEIGES.

VULCANIZING APPARATUS.

Patented Dec. 7,1875.

Q50/ INVENTOR.

ATTORNEY.

WITNESSES:

UNITED vSTATES PATENT QFFIGE.

JACOB D. HEIGES, OF YORK, PENNSYLVANIA.

IMPROVEMENT IN VULCANIZING APPARATUS.

Specification forming part of Letters Patent No. 170,731, dated December 7, 1875; application filed September 9, 1875.

.To all whom t may concern:

Be it known that I, JACOB D. Helens, of

` York, in the county of York and State of Pennsylvania, have invented certain new and useful Improvements in Process and Apparatus for Treating' Celluloid Bases or Plates for.

- in the art to which it pertains to make and use the same, reference being had to the accompanying drawing, and to the letters of reference marked thereon, which form a part of this specification.

My invention relates to improvements in dental iasks, the nature of which will be hereinafter fully explained by reference to the accompanying drawings, in which- Figure l represents a side elevation with cap and upper section of iiask raised and one of the bolts removed 5 Fig. 2, a verticalrsection, showing the internal construction of the iiask and a mold for holding the teeth; Fig. 3, a plan with cap removed, and Fig. 4 a View ot' under side of tray or plate separating the chambers of the flask; and Fig. 5, a portion of the top or cover.

In each of the views similar letters of reference are employed to indicate corresponding parts wherever they occur.

A represents my improved iiask, which, when in use, is supported over a spirit or other suitablelamp or llame, for the purpose of heating the same, as hereinafter more fully explained. The iiask A is constructed in two sections, al a2, and the top B being held correctly in position by means of projections, hereinafter described, and of bolts or rods O O, which, at their lowers ends, are provided with squared heads, titting into slots D in projections D, formed on the periphery or sides of the section a1, while at their upper ends they pass through slots B1 in projections B2, formed on the edge or periphery of thetop B. The lower section al is provided'with a solid bottom, a3, and is divided about halt-way by means ot' a Vmovable plate or tray, E, supported on a rim or ledge, F', and a central support, E', which rests on cross-braces aft, cast with the section al, in order to give greater strength thereto, in orderto bear the strain of the downward pressure of the materials being operated upon during the process of forming the celluloid plates and aflixing the teeth thereto. Around the center of the plate or tray E are formed small holes or apertures c, for the passage of steam from the interior of the chamber e', formed below the plate or tray E.

In using the apparatus, the chamber e is llled about half full of water, which, by the action ofthe heat of a lamp or other suitable' iame, is converted into steam and passed up through the openings e, and through the porous plaster, to act upon the celluloid plates, which are placed centrally on the plate E, together with the necessary' molds and teeth, as is well understood by dentists.

gis the plaster filling surrounding the lower die gl. It has formed in it the annular channel g2, for the purposes of receiving any surplus celluloid that might otherwise prevent the perfect closing together of the sections of the liask, and lfor collecting the water formed from the condensation of steam, which will he absorbed by the plaster, and thus, in a degree, resupply the dash with water to be regenerated into steam. rlhe upper surface ot' the filling g, between the periphery and annular channel g2, is made to slope slightlyinwardly, to facilitate the collection of the water. The celluloid plate, filling g, and die g1 having been properly arranged on the plate E, the cover B and section a2, containing the opposite die and teeth, are then placed in position, as shown by Fig. 1, having a space between the lower edge of section a2 and the upper edge'ot' section a1, thesections being held in correct relation, the one to the other, by means of the grooved projections F, formed on the sides ot' the sections al a?, adapted to embrace the bolts or rods O C. These parts being thus arranged, and the iiasl; having been heated, so as to cause the steam to rise from the water in the lower chamber e', and render the celluloid plastic, they are gradually brought together by means ofthe nuts G G, until the projections H on the under side of section a2 come down and fit closely into the recesses H', formed in the upper side of section al, thereby firmly closing in the celluloid plate, and conforming it to the dies or molds and teeth.

- al a?, the section al beingv divided by a perforated plate or tray, E, and provided with an internal steam-generating chamber, e', beneath the plate or tray E, substantially as shown and describedf 2. In a dental iiask, the combination, With va section, al, pro vided with a steam-generating chamber, e', and perforated supporting plate or tray E, of the removable section a2 and cover B, substantially as shown and described.

3. A dental iiask embodying in its construction a section, al, provided with a steam-generating chamber, e', perforated plate or tray l E, removable section a2, and a top or cover, B,

the Whole being held and drawn together by external bolts or rods C C, Working in grooved projections or guides Rand screw/nuts G G, substantially as shown and described.

4. The combination with a dental flask, constructed with an internal steam: generating chamber, of a llin g, g, provided with a groove or channel, g2, around the die g, substantiallyr as and for the purposes described.

5. The combination with a dental flask, constructed with an internal steam -generating chamber, e', and perforated supporting-plate E, of a filling or mold, g, surrounding a die, g1, and provided with a groove or channel, g2,

substantially as and for the purpose described.

In testimony that I claim the foregoing as my own l ax my signature in presence of tWo Witnesses.

JACOB D. HEIGES. 

